...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Enhancing creep formability and comprehensive property in Al-Mg-Si alloy by combinatorial pre-ageing and large pre-deformation
【24h】

Enhancing creep formability and comprehensive property in Al-Mg-Si alloy by combinatorial pre-ageing and large pre-deformation

机译：通过组合预衰老和大变形提高Al-Mg-Si合金中的蠕变成形性和综合性质

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A thermal-mechanical route proceeding by pre-ageing and heavy cold-rolling has been developed to significantly improve both the creep formability and comprehensive properties in an Al-Mg-Si alloy. The uniform creep deformation increases by 2-5 times and the strength enhances by 60-140 MPa without sacrificing ductility compared to the conventional treatment. The pre-ageing at 180 °C could tune the density, mobility and distribution of the dislocations generated during cold-rolling. A physical metallurgical picture of the pre-ageing-dependent creep ageing in the cold-worked Al-Mg-Si alloy is established based on complementary transmission electron microscopy, differential scanning calorimetry and X-ray diffraction. Concurrent solutes precipitation and dislocation recovery contribute to the exceptional creep ageing response in the heavily cold-deformed Al-Mg-Si alloy. The high density dislocations could substantially promote the creep deformation and improve the strength-ductility balance. The fragmentation of grains and the inhibition of continuous precipitation along the grain boundary lead to a superior resistance to inter-granular corrosion. Our results demonstrate the application potential of solutes precipitation control before large pre-deformation in creep age forming of Al alloy components with unusual figures of merit.
机译：已经开发出通过预先老化和重冷轧的热机械路线进行，以显着改善Al-Mg-Si合金中的蠕变成形性和综合性能。与常规治疗相比，均匀蠕变变形增加2-5次，强度增强了60-140MPa，而不会牺牲延展性。在180℃下预先老化可以调节冷轧期间产生的脱位的密度，移动性和分布。基于互补的透射电子显微镜，差示扫描量热法和X射线衍射建立冷加工的Al-Mg-Si合金中老化前依赖性蠕变老化的物理冶金图片。并发溶质沉淀和错位恢复有助于沉重的冷变形Al-Mg-Si合金中的特殊蠕变衰老响应。高密度脱位可以基本上促进蠕变变形并改善强度 - 延展性平衡。晶粒的碎片和沿晶界连续沉淀的抑制导致抗颗粒间腐蚀的优异抗性。我们的结果证明了在具有不寻常的优异图形的Al合金组分的蠕变阶段形成前溶质沉淀控制的应用潜力。

著录项

  • 来源
    《Materials Science and Engineering》 |2021年第5期|141967.1-141967.13|共13页
  • 作者

    Kailiang Chen; Chunhui Liu; Peipei Ma; Jianshi Yang; Lihua Zhan; Minghui Huang; Jianhua Hu;

  • 作者单位

    Light Alloy Research Institute of Central South University State Key Laboratory of High-Performance Complex Manufacturing Changsha 410083 China School of Mechanical and Electrical Engineering Central South University Changsha 410083 China;

    Light Alloy Research Institute of Central South University State Key Laboratory of High-Performance Complex Manufacturing Changsha 410083 China School of Mechanical and Electrical Engineering Central South University Changsha 410083 China;

    Light Alloy Research Institute of Central South University State Key Laboratory of High-Performance Complex Manufacturing Changsha 410083 China;

    Light Alloy Research Institute of Central South University State Key Laboratory of High-Performance Complex Manufacturing Changsha 410083 China School of Mechanical and Electrical Engineering Central South University Changsha 410083 China;

    Light Alloy Research Institute of Central South University State Key Laboratory of High-Performance Complex Manufacturing Changsha 410083 China School of Mechanical and Electrical Engineering Central South University Changsha 410083 China;

    Light Alloy Research Institute of Central South University State Key Laboratory of High-Performance Complex Manufacturing Changsha 410083 China;

    Shanghai Aircraft Manufacturing Co. Ltd. Shanghai 201325 China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Creep forming; Cold-rolling; Dislocation; Precipitation; Al-Mg-Si alloy;

    机译：蠕变形成;冷轧;错位;沉淀;Al-Mg-Si合金;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号